diff --git a/manifests/init.pp b/manifests/init.pp
index f10d6151..cede8b91 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -39,10 +39,10 @@
           validate_re($repo_url_suffix, '^0\.1[02]$', $suffix_error_msg)
         }
         elsif $::operatingsystemrelease =~ /^15\.04$/ {
-          validate_re($repo_url_suffix, '^(0\.1[02]|[45]\.x)x$', $suffix_error_msg)
+          validate_re($repo_url_suffix, '^(0\.1[02]|[45]\.x)$', $suffix_error_msg)
         }
         elsif $::operatingsystemrelease =~ /^15\.10$/ {
-          validate_re($repo_url_suffix, '^(0\.1[02]|[456]\.x)x$', $suffix_error_msg)
+          validate_re($repo_url_suffix, '^(0\.1[02]|[456]\.x)$', $suffix_error_msg)
         }
         elsif $::operatingsystemrelease =~ /^1[246]\.04$/ { #LTS
           validate_re($repo_url_suffix, '^(0\.1[02]|[456]\.x)$', $suffix_error_msg)